不同锚杆锚固方式洞室抗爆性能分析  

Anti-knock Quality Analysis of Cavern with Different Anchorage Styles of Anchored Bolt

作　　者：张向阳[1] 沈俊[1] 徐景茂[1] 孔福利[1] 

机构地区：[1]总参工程兵科研三所,河南洛阳471023

出　　处：《煤矿开采》2015年第5期101-105,共5页Coal Mining Technology

摘　　要：锚杆根部加强和普通长密锚杆加固洞室抗爆性能对比试验结果表明,在爆炸条件下,锚杆根部加强加固洞室拱顶与底板发生相背位移,普通长密锚杆加固洞室拱顶与底板发生相向位移,尽管锚杆根部加强洞室的位移峰值较大,由于其塑性变形能力得到提高,塑性变形消耗的爆炸能量增大,其最终破坏程度较轻。在爆炸荷载作用下,锚杆根部加强加固洞室抗爆效果要优于普通长密锚杆加固洞室的抗爆效果。Anti-knock quality comparison test of root-reinforcement anchored bolt and ordinary anchored bolts showed that under explo-sion condition, reverse displacement occurred between arch roof and floor in root-reinforcement anchored bolt, but opponent displace-ment occurred in ordinary anchored bolt. Although displacement peak value of root-reinforcement anchored bolt was larger than that of ordinary bolt, its plastic deformation ability was promoted and explosion energy dissipated for plastic deformation increased, so final failure degree was smaller. Under explosion load, anti-knock effect of root-reinforcement anchored bolt was better than that of ordinary anchored bolt.

关 键 词：锚固方式 洞室 根部加强 普通长密锚杆 模型试验 

分 类 号：TD350.1[矿业工程—矿井建设]